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Data as of Nov 7, 2026

210.51.248.0/21

No anonymizer space · no proxy exits in 30 days

CHINA UNICOM Industrial Internet Backbone · space held by China Unicom IP network

Announcement
this exact prefix
RPKI valid
Announced by
AS9929
Type
Business
60% of it

Announcements

Less specific

Covering announcements

PrefixOriginTypeProxy exitsHolderRPKI
210.51.192.0/18
since May 2005
AS9929Internet providerChina Unicom IP network
210.51.0.0/16
since May 2005
AS9929Internet provider62China Unicom IP network

Registrations in this block

The registry's network records over the announcement: those covering it, widest first, then every record inside it, under its parent.

RangeAddressesNetnameHolderTypeCreatedAbuse contact
210.51.0.0/1665,536UNICOM-CNChina Unicom IP networkALLOCATED PORTABLE—hqs-ipabuse@chinaunicom.cn
└ 210.51.248.0/24256ZHENGZHOU-BROADCAST-TELEVISIONZhengZhou Broadcast & TelevisionASSIGNED NON-PORTABLE—hqs-ipabuse@chinaunicom.cn
via UNICOM-CN
└ 210.51.249.0/25128shanghai-shuoqing-corpshanghai cityASSIGNED NON-PORTABLE—hqs-ipabuse@chinaunicom.cn
via UNICOM-CN
└ 210.51.249.128/2732shanghai-qiankun-corpshanghai cityASSIGNED NON-PORTABLE—hqs-ipabuse@chinaunicom.cn
via UNICOM-CN
└ 210.51.249.160/2816CHANGZHOU-JINGU-MANSIONchangzhou cityASSIGNED NON-PORTABLE—hqs-ipabuse@chinaunicom.cn
via UNICOM-CN
└ 210.51.249.176/2816CHANGZHOU-FEIDIAN-NETBARchangzhou cityASSIGNED NON-PORTABLE—hqs-ipabuse@chinaunicom.cn
via UNICOM-CN
└ 210.51.249.192/304CUIZHU-NANCUN-SMALL-DISTRICTcuizhu nancun small district,changzhou cityASSIGNED NON-PORTABLE—hqs-ipabuse@chinaunicom.cn
via UNICOM-CN
└ 210.51.249.224/2816ZHONGFANG-LTDzhongfang Ltd,changzhou cityASSIGNED NON-PORTABLE—hqs-ipabuse@chinaunicom.cn
via UNICOM-CN
└ 210.51.249.240/2816CUIHU-LTDcuihu Ltd,changzhou cityASSIGNED NON-PORTABLE—hqs-ipabuse@chinaunicom.cn
via UNICOM-CN
└ 210.51.250.0/25128shanghai-zhangjin-corpshanghai cityASSIGNED NON-PORTABLE—hqs-ipabuse@chinaunicom.cn
via UNICOM-CN
└ 210.51.250.160/2816wenzhou-jintai-mansionwenzhou city,zhejiang provinceASSIGNED NON-PORTABLE—hqs-ipabuse@chinaunicom.cn
via UNICOM-CN
└ 210.51.250.176/2816wenzhou-huahai-plazawenzhou city,zhejiang provinceASSIGNED NON-PORTABLE—hqs-ipabuse@chinaunicom.cn
via UNICOM-CN
└ 210.51.250.192/2816WENZHOU-YUDA-MANSIONwenzhou cityASSIGNED NON-PORTABLE—hqs-ipabuse@chinaunicom.cn
via UNICOM-CN
└ 210.51.250.208/2816WENZHOU-CHAOYANG-MANSIONwenzhou cityASSIGNED NON-PORTABLE—hqs-ipabuse@chinaunicom.cn
via UNICOM-CN
└ 210.51.250.224/2816WENZHOU-HUANQIU-MANSIONwenzhou cityASSIGNED NON-PORTABLE—hqs-ipabuse@chinaunicom.cn
via UNICOM-CN
└ 210.51.250.240/2816WENZHOU-LONGSHE-SQUAREwenzhou cityASSIGNED NON-PORTABLE—hqs-ipabuse@chinaunicom.cn
via UNICOM-CN
└ 210.51.251.0/25128shanghai-wangchuan-corpshanghai cityASSIGNED NON-PORTABLE—hqs-ipabuse@chinaunicom.cn
via UNICOM-CN
└ 210.51.251.128/2664shanghai-youxin-guangchu-corpshanghai cityASSIGNED NON-PORTABLE—hqs-ipabuse@chinaunicom.cn
via UNICOM-CN
└ 210.51.251.192/2732shanghai-quanxin-corpshanghai cityASSIGNED NON-PORTABLE—hqs-ipabuse@chinaunicom.cn
via UNICOM-CN
└ 210.51.251.224/2816shanghai-youxiang-jinqu-corpshanghai cityASSIGNED NON-PORTABLE—hqs-ipabuse@chinaunicom.cn
via UNICOM-CN
└ 210.51.251.240/2816BANGBU-MINJIANbangbu cityASSIGNED NON-PORTABLE—hqs-ipabuse@chinaunicom.cn
via UNICOM-CN
└ 210.51.252.0/23512HUBEI-SHIYAN-GUANGDIANshiyan broadcast&television information network corp., Hubei provinceASSIGNED NON-PORTABLE—hqs-ipabuse@chinaunicom.cn
via UNICOM-CN
└ 210.51.253.0 - 210.51.255.255768HANGZHOU-CABLEHangzhou Cable TV NetworkASSIGNED NON-PORTABLE—hqs-ipabuse@chinaunicom.cn
via UNICOM-CN
└ 210.51.254.0/25128shanghai-xinxian-guaitui-corpshanghai cityASSIGNED NON-PORTABLE—hqs-ipabuse@chinaunicom.cn
via HANGZHOU-CABLE
└ 210.51.254.128/25128shanghai-wenfeng-shangdan-corpshanghai cityASSIGNED NON-PORTABLE—hqs-ipabuse@chinaunicom.cn
via HANGZHOU-CABLE
└ 210.51.255.0/25128shanghai-fengjiu-kunding-corpshanghai cityASSIGNED NON-PORTABLE—hqs-ipabuse@chinaunicom.cn
via HANGZHOU-CABLE
└ 210.51.255.128/25128shanghai-haoshi-yidui-corpshanghai cityASSIGNED NON-PORTABLE—hqs-ipabuse@chinaunicom.cn
via HANGZHOU-CABLE

A contact marked “via” is the registry's: the record names none of its own, so the registry hands down its parent's.

Composition

The types across the prefix's announced space, by addresses.

Announced space

Address share

Announced space

Types across the prefix

2,048 addresses
TypeAddressesShareRanges
Business1,22060%23
Internet provider82840%4

Network & registry

AnnouncementRouting historyRPKI & IRRWhois & abuse
Origin network

AS9929

CN
Name
CHINA UNICOM Industrial Internet Backbone
Type
Internet provider
Registered
Apr 5, 2000
Domain
chinaunicom.cn
Industry
Internet Service Provider (ISP)
Spamhaus ASN-DROP
not listed